My engine is an early 80's chrysler 115 with Magnaforce ignition. From what I've read it sounds like I am not the only one that has problems with this ignition. The engine will always start easily when it's cold. It will then run flawlessly until right before it warms all the way up, then it will just die. Nothing. No spark. It will however "pop" once as the key is released from cranking it. If I mess with it and crank it long enough to nearly kill both of my batteries it will start and run FLAWLESSLY for the rest of the day. This pattern has played out exactly the same way the 5 times I've had her out.This is frustrating and dangerous as it has done this to me on a windy day when I was trying to get out of a marina. Is there any way to change out this ignition at a reasonable cost with a aftermarket or comparable system? I am scared to death of the bill if/when I take it to the shop. Thank you for any input.